TWI554745B - Intelligent wearable device and method for calculating body weight - Google Patents

Description

Intelligent wearable device and method for calculating body weight

The invention is a technical field of a smart wearable device and method for calculating body weight, in particular to a design capable of autonomous power generation and capable of measuring body weight during travel.

Modern people are busy with work, and the situation of three highs (high blood sugar, high blood fat, high blood pressure) is becoming more and more common. This will cause serious harm to health, and it has become a health worry for modern people. Part of the cause of the three highs is obesity, so self-weight management helps reduce the incidence of disease.

The development of network communication, with innovative and practical design, so that all kinds of wearing devices have sprung up, such as smart watches, electronic sports bracelets, etc., such products can be measured or recorded for the wearer, The physiological information in the state of exercise is stored in the remote database through the network, or the data is compared and analyzed, so that the wearer can easily understand and manage the self-health state. However, the smart watch and the electronic sports bracelet also have restrictions on the information that can be collected, such as the inability to measure or collect the wearer's weight value.

For example, the invention patent case of the "Instant Type Body Measurement System" of the Republic of China Patent No. I476371 mainly includes an integrated weight measuring device and a mobile electronic device. The body weight measuring device mainly adopts a static measuring method and is in a static state. The pressure of the wearer's foot is sensed by a first pressure sensing unit and a second pressure sensing unit, and then converted into a weight value signal by a central processing unit, and sent to the mobile electronic device through a first wireless communication unit. The device is displayed. The single time point measurement data is more susceptible to noise interference of the pressure sensing component, reducing the body weight measurement accuracy, and the power of the system is Provided by the power supply unit, but the power supply is exhausted, the wearer must immediately charge or replace the battery, causing trouble for the wearer. In view of this, the inventors thought about whether it is possible to design a wearable body weight measuring device, and use the method of statistical dynamic measurement data to improve the body weight measurement accuracy, and the required power is independently generated by the power supply, and can be measured and recorded at any time. body weight.

The main object of the present invention is to provide an intelligent wearable device and method for self-powered and capable of measuring and calculating weight during travel.

The secondary object of the present invention is an intelligent wearable device and method, which mainly receives a plurality of pulse signals of a plurality of piezoelectric elements, and a plurality of pulse signals are obtained by operation method to obtain a plurality of feature vectors, using a plurality of features. The vector works with the cloud database to calculate the wearer's most correct weight value.

For the above purposes, the present invention includes a carrier and a data logger having at least one heel piezoelectric element, at least one foot piezoelectric element, a central control module, an electrical energy conversion module, and a power storage module, the heel piezoelectric element outputs a pulse signal by a pressure applied to the heel during a wearer's running; the foot piezoelectric element outputs a pulse signal when the wearer walks by the pressure of the sole of the foot The central control module includes a processor and a wireless transmission unit, the processor is electrically connected to the heel piezoelectric element, the sole piezoelectric element, and the wireless transmission unit, and the processor receives the heel piezoelectric element, The plurality of pulse signals output by the piezoelectric device of the foot are calculated by a plurality of feature vectors, and the feature vector is sent out through the wireless transmission unit; the power conversion module is electrically connected to the heel piezoelectric component, The foot piezoelectric element and the power storage module, the power conversion module receives the plurality of pulse signals of the heel piezoelectric element and the sole piezoelectric element, and is converted into And charging the power storage module; the power storage module supplies power required for operation of each component; and the data logger receives the plurality of feature vectors transmitted by the wireless transmission unit. The data logger transmits the plurality of feature vectors to a remote database for connection matching, and calculates the wearer's weight value.

Furthermore, the present invention is a method of measuring body weight that measures the weight of a wearer while the wearer is walking through a wearer's walking process by at least one heel piezoelectric element and at least one foot piezoelectric element. Transmitting a plurality of pulse signals to a processor by the force of the midfoot; the processor receives the plurality of pulse signals and obtains a plurality of feature vectors by an operation method, and the wireless transmission unit receives the plurality of feature vectors by the processor The plurality of feature vectors are transmitted to a data logger; and the data logger performs a connection matching of the plurality of feature vectors with a remote database to calculate the wearer's weight value.

According to the present invention, after a plurality of piezoelectric elements are pressed by the foot, a plurality of pulse signals are respectively output corresponding to the positions of the heel and the foot, and the plurality of pulse signals are calculated by comparing and calculating the weight of the wearer. The power storage module can also be charged via the power conversion module, so that the intelligent wearable device of the present invention can automatically measure the permanent wear measurement.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

1‧‧‧ Vehicles

11‧‧‧foot area

12‧‧‧The arch area

13‧‧‧Heel area

14‧‧‧First waterproof cover

15‧‧‧Second waterproof cover

2‧‧‧ data logger

3‧‧‧heel piezoelectric elements

4‧‧‧foot piezoelectric elements

5‧‧‧Central Control Module

51‧‧‧ processor

52‧‧‧Wireless transmission unit

6‧‧‧Power Conversion Module

7‧‧‧Power storage module

301‧‧‧Steps

302‧‧‧Steps

303‧‧ steps

Figure 1 is an exploded view of the present invention; Figure 2 is a block diagram showing the operation of various components in the vehicle of the present invention 3 is a flow chart of a method for calculating body weight according to the present invention; FIG. 4 is a schematic diagram of a single pulse signal according to the present invention; and FIG. 5 is a diagram showing a plurality of pulse signals generated by a plurality of piezoelectric elements during walking of a person of 60 kg; 6 is a plurality of pulse signal diagrams generated by a plurality of piezoelectric elements during walking of a person of 90 kilograms.

1 is an exploded view of the present invention, and FIG. 2 is a block diagram showing the operation of some components. The intelligent wearable device for calculating the weight of the present invention mainly comprises a carrier 1 and a data recorder 2. The data logger 2 can be a smart phone, a tablet, etc., and has the ability to receive wireless communication signals and compare them with a remote database. The carrier 1 is a flexible board, and is mounted with at least one heel piezoelectric element 3, at least one foot piezoelectric element 4, a central control module 5, an electrical energy conversion module 6, and a power storage module 7. The carrier 1 can be an insole, an inner bottom layer of a shoe or a sole layer of a sock, which must be in contact with the sole of the wearer during the measurement process.

The carrier 1 has a shape corresponding to the foot shape of the human foot, and includes a foot area 11, an arch area 12, and a heel area 13. In the present example, the sole piezoelectric element 4 has three different locations distributed within the sole region 11. The plurality of foot piezoelectric elements 4 can be pressed by the soles of the feet to output a plurality of pulse signals while the wearer is traveling. In addition, in the embodiment, the heel piezoelectric element 3 has one, but not limited to, distributed in the heel region 13. The heel piezoelectric element 3 can be pressed by the heel to output a pulse signal while the wearer is running.

The central control module 5 includes a processor 51 and a wireless transmission unit 52, which can be integrated into a wafer. The processor 51 is electrically connected to the heel piezoelectric element 3, the sole piezoelectric element 4, and the wireless transmission unit 52. The processor 51 receives the heel piezoelectric element 3 and the foot piezoelectric The complex pulse signal of the component 4 is subjected to a plurality of feature vectors by an algorithm, and the plurality of feature vectors are transmitted to the data logger 2 via the wireless transmission unit 4. The feature vector includes an output voltage, an output frequency, and a peak voltage. The data logger 2 is connected with a remote database, and according to the amplitude, the width and the frequency characteristic of the pulse wave generated by walking or running of different weight persons, the calibration parameters of the piezoelectric component are compared with each other, and the respective parameters are compared. Item parameters, and finally calculate the weight value of the wearer.

The electrical energy conversion module 6 and the electrical storage module 7 are mounted in the arch region 12. Because such components are relatively large, being installed in the arch region 12 can reduce the discomfort of the wearer's sole. The power storage module 7 can be a rechargeable battery that supplies the power required for the operation of each component. The power conversion module 6 is electrically connected to the heel piezoelectric element 3, the foot piezoelectric element 4, and the power storage module 7. The electric energy conversion module 6 receives an alternating current pulse signal of the heel piezoelectric element 3 and the sole piezoelectric element 4, converts it into direct current, and charges the electric storage module 7. In this way, the product of the invention can generate electricity independently without additional power, and is convenient and practical design.

Furthermore, the upper and lower sides of the carrier 1 may further include a first waterproof cover 14 and a second waterproof cover 15 to protect the electronic components mounted on the carrier 1 to reduce the chance of malfunction and damage.

Next, a method for calculating the weight of the present invention is described. FIG. 3 is a flowchart of the method of the present invention. The steps are: Step 301: bearing at least one of the heel piezoelectric element and the at least one foot piezoelectric element. The wearer outputs a plurality of pulse signals to a processor during walking of the foot; step 302: the processor receives the plurality of pulse signals and performs a plurality of feature vectors by a method of operation, and a wireless transmission unit is Transmitting the plurality of feature vectors received by the processor to a data logger; Step 303: The data logger connects and matches the plurality of feature vectors with a remote database, and calculates the weight value of the wearer.

Wherein the processor calculates the output voltage by using the obtained pulse signal by an algorithm. Please refer to the schematic diagram of a pulse signal shown in the fourth figure; this is a piezoelectric element that is pressed by the foot to generate a pulse signal. The algorithm divides the pulse signal into k window frame numbers, and each window frame length is L, the output voltage calculation formula of the i-th piezoelectric element is:

L: window frame length

k: sash number

V: the output signal of the i-th piezoelectric plate

T _k : system ambient temperature of window frame number k

V*: conjugate complex number of V signal

ADJ _i : Temperature and voltage correction parameter table when the piezoelectric component is shipped from the factory

q _i (k): the output voltage of the i-th piezoelectric plate after correction, in the time window frame number k

The processor defines a feature vector by integrating the obtained output voltage with other information of the pulse signal. The eigenvector Q _i (k) is: Q _i ( k )=[ q _i ( k ) , V _ikMAX , V _iFreq ]

V _ikMAX : number i the first piezoelectric plate in the time window frame number k peak

V _iFreq : voltage signal output signal frequency of the i-th piezoelectric element

q _i (k): the output voltage of the i-th piezoelectric plate after correction, in the time window frame number k

In this embodiment, the data logger connects and matches a plurality of feature vectors with a remote database, and compares the previously established human walking database parameters: for example, the output pressure of the plurality of piezoelectric elements; The placement position; 3. signal frequency; 4. peak voltage... and other information can calculate the wearer's weight value.

In addition, the statistical data of the present invention can select a single-leg mode or a two-legged mode, and obtain a plurality of feature vectors according to different modes, thereby calculating a wearer's weight value.

Figure 5 is a digital pulse signal generated by a piezoelectric element during walking of a 60 kg person. Figure 6 is a digital pulse signal generated by a piezoelectric element during a walking process of 90 kg. According to the data, people of different weights can generate different impulse signals when walking. Therefore, when the database is built, it is necessary to record various parameters for the people of different weights in walking and running, and establish a complete data. The library will get a more correct weight value when comparing later.

In summary, the intelligent wearable device for calculating the weight of the present invention is a self-powered sustainable measurement design, which mainly utilizes a plurality of piezoelectric elements as a signal output and power generation source during travel (such as walking or During the running, the data is measured and recorded, and the correct weight of the wearer is calculated through the feature vector and the remote database. The required power for the autonomous cycle charging does not require additional power, and is an innovative and practical design. In addition, the self-power generation sustainable measurement design of the present invention is stored in the remote database through the data recorder, and the large amount of data obtained can effectively analyze the weight, and can perform various analysis to achieve easy self-health management. the goal of.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the embodiments of the present invention. That is, the equivalent variations and modifications made by the scope of the present invention are covered by the scope of the invention.

1‧‧‧ Vehicles

11‧‧‧foot area

12‧‧‧The arch area

13‧‧‧Heel area

14‧‧‧First waterproof cover

15‧‧‧Second waterproof cover

2‧‧‧ data logger

3‧‧‧heel piezoelectric elements

4‧‧‧foot piezoelectric elements

5‧‧‧Central Control Module

51‧‧‧ processor

52‧‧‧Wireless transmission unit

6‧‧‧Power Conversion Module

7‧‧‧Power storage module

Claims (8)

An intelligent wearable device for calculating weight comprises: a carrier mounted with at least one heel piezoelectric element, at least one foot electrical component, a central control module, an electrical energy conversion module, and a power storage module; The heel piezoelectric element outputs a pulse signal by a pressure applied to the heel during a wearer's running; the foot piezoelectric element outputs a pulse signal by the pressure of the sole of the foot during the walking of the wearer; the central control module, The processor includes a processor and a wireless transmission unit, the processor is electrically connected to the heel piezoelectric element, the sole piezoelectric element, and the wireless transmission unit, and the processor receives the heel piezoelectric element and the sole piezoelectric element a plurality of pulse signals are calculated to obtain a plurality of feature vectors, and the plurality of feature vectors are transmitted through the wireless transmission unit; the power conversion module is electrically connected to the heel piezoelectric component, the sole piezoelectric component, and the a power storage module, the power conversion module receives the plurality of pulse signals of the heel piezoelectric element and the sole piezoelectric element, and after conversion Pack; the reservoir module supplies electrical power necessary for the operation of each member; and a data logger receiving the plurality of eigenvectors by the wireless transmission unit transmitted. The smart wearable device for calculating weight according to claim 1, wherein the feature vector comprises an output voltage, an output frequency, and a peak voltage. The smart wearable device for calculating the weight according to claim 1, wherein the carrier can be one of an insole, an insole, or a sole of a sock. The smart wearable device for calculating the weight according to claim 1, wherein the carrier is a flexible board, and the carrier comprises a first waterproof cover and a second waterproof cover on opposite upper and lower sides, respectively. The smart wearable device for calculating weight according to claim 1, wherein the sole piezoelectric element has a plurality of different regions corresponding to the sole of the foot. A method for calculating body weight, the method comprising: outputting a plurality of pulse signals to a processor by at least one heel piezoelectric element and at least one foot piezoelectric element, subject to a force applied by a foot during walking of the wearer; Receiving the plurality of pulse signals to obtain a plurality of feature vectors by a method of operation, a wireless transmission unit transmitting the plurality of feature vectors received by the processor to a data recorder; and the data recorder The plurality of feature vectors are matched with a remote database to calculate the weight value of the wearer. A method of calculating a body weight as described in claim 6 wherein the feature vector comprises an output voltage, an output frequency, and a peak voltage. The method for calculating the weight according to claim 6, wherein the method is to divide the pulse signal obtained by the i-th piezoelectric element into k sash numbers, each sash is L, the ith The output voltage calculation formula of the piezoelectric element is: L: window frame length; k: window frame number; V _i : output signal of the i-th piezoelectric plate; T _k : system ambient temperature of the window frame number k; V*: conjugate complex number of the V signal; ADJ _i : The temperature and voltage correction parameter table when the piezoelectric component is shipped from the factory; q _i (k): the output voltage of the i-th piezoelectric plate after correction, in the time window frame number k.